20682847 has 2 divisors, whose sum is σ = 20682848. Its totient is φ = 20682846.

The previous prime is 20682803. The next prime is 20682869. The reversal of 20682847 is 74828602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20682847 - 2⁷ = 20682719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20682877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10341423 + 10341424.

It is an arithmetic number, because the mean of its divisors is an integer number (10341424).

Almost surely, 2^20682847 is an apocalyptic number.

20682847 is a deficient number, since it is larger than the sum of its proper divisors (1).

20682847 is an equidigital number, since it uses as much as digits as its factorization.

20682847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 20682847 is about 4547.8398168801. The cubic root of 20682847 is about 274.4964758567.

It can be divided in two parts, 2068 and 2847, that multiplied together give a triangular number (5887596 = T₃₄₃₁).

The spelling of 20682847 in words is "twenty million, six hundred eighty-two thousand, eight hundred forty-seven".